package LC.linkedList;

public class LC707Two {
    public static void main(String[] args) {

    }
}

class listNode {
    int val;
    listNode next;
    listNode prev;

    listNode(int val) {
        this.val = val;
    }
}

class MyLinkListNode {
    int size;
    listNode head;
    listNode tail;

    public MyLinkListNode() {
        size = 0;
        head = new listNode(0);
        tail = new listNode(0);
        head.next = tail;
        tail.prev = head;
    }
}